Improved method of attaching lines to harpoons



UNITE STATES ATENT Orrick..

CEAS. F. BROWN, OF \/VARREN, RHODE ISLAND.

Specification forming part of Letters Patent No. 7,6l0, dated September3, 1850.

` erenee being had to the accompanying drawings, forming part of thisspecification, in which- Figure l is a View of an improved harpoon, theface of the head being turned toward the eye. Fig. 2 is a view of thesaine having the side edge of the head turned toward the eye. Fig. 3represents the end ofthe line bent round the harpoon, but not drawntight. Fig. t represents the head, the cutting-edge being turnedY towardthe eye. of the head.

Similar letters of reference indicate corresponding parts in each of theseveral figures.

The nature of' iny invention consists in an improvement. in the inode ofsecuring the line to the harpoon, by which the end ef any line ofsuitable size and strength may be quickly secured without knots orsplicing.

To enable others skilled in the art to make and use luy invention, Iwill proceed to describe its construction and operation.

A, Figs. l, 2, 4, and 5, represents the head of theharpoon, which maybemade of wroughtiron steeled at the cutting-edge, or of cast-ironchilled. It is of chisel forni-that is, its cutting edge or pointisnearly similar to thatof a chisel. lts two side edges, a a, appear parallel when the cutting-edge is perpendicular to the line of sight, (sceFig. 1;) but when seen with the edge in the line of sight, (see Fig. 2,)they incline in opposite direct-ions' back from the point, cach formingpart of the thread of a very steeplydnclining screw. The back part ofthe head is barbed, (in Fig. et the shape of the back part of the headis shown in dotted lines,) and the sides of the head are each roundedolif at one corner toward the point of the barb.

Bis the shank, which is screwed or otherwise firmly secured'ni the head.

C is a cast-iron socket or butt-end, into which the back end, g, of theshank is rmly secured. The front end of the socket is of rounded form.

Fig. 5 is a perspective view D is the pole, which is of wrought-iron, ofsuitable length and thickness. It is screwed into the socket or buttendC. At a suitable distance from the end a swinging link or ring, E, issecured by a pin, e, passingthrough the pole. The end of the pole has a.knob or butt, F, to forni a good hold or bearing for the hand inthrowing it.

G represents the end of a line. H. is a metal ring, which is put on theshank B before the head or socket is put on. Its inner dianie. ter isnot sufficiently large to allow it to slip over the socket. The end ofthe line is passed from the back through the swinging link E and throughthe ring H, which is made to han-g against. one side of the shank, so asto leave more space between it and the ring on the opposite side. It isthen bent round the shank and returned through the ring. lhe line beingthen pulled tight, as shown in Figs. 1

and 2, the ring H- is brought against the rounded end d of the socket orbutt C, and the greater the strain that is put on the line the tighterthe line and the ring will clasp the shank. The opposite side of thering to that bearing on the shank will at the saine time pinch the lineclosely against. the socket. The instant the strain is released the ringand end of the line are free to slide on the shank until the line isagain tightened. The ringE contines the line to the pole While theharpoon is being projected.

The harpoon is projected by hand in the common way. As it enters thetlesh, in consequence ot' the inclination of the side edges of the head,it will keep gradually turning, though very slightly. The side edges,not being acute enough to cut the flesh, will not work or cut the holelarger than it was cut by the point. The flesh Will close over the headand as the points b b of the barbs are not in line with the corners 0cof the head, they will hold more securely, and the harpoon Will not beliable to draw out.

The ordinary way of securing the line to the harpoon is by splicing whatis termed a strap to the shank and securing the end of the line to it.

in the form of a loop to the shank; but my improved inode of fasteningallows ofthe end of any line of suitable size being instantly made fastdirectly to the harpoon, making a Sometimes the end of thelineis splicedmore ready and an'equally secure means of atof the socket or btt C, inthe manner subg y tachment. stantially as herein described. i

What I claim as new in my invention and desire to secure by LettersPatent, is- C' F BROWN' The manner of attaching and securing theWitnesses: Y

line to ldie harpoon by means of the ring H, ALFRED BOSWORTHY, f

sliding on thev shank, and the rounded end d GEO. G. HAZARD.

